On Sat, 16 Oct 2004 16:18:57 +0800, "C.H.Ling" <chling@xxxxxxxxxxxxx>
wrote:
>
>Most people will found their digital camera can provide very accurate
>exposure since they have long forgot about the difficulty of slide exposure.
>With digital you will not notice 0.5 stop error as it can be fixed easily in
>software.
Negative film gives (gave!) reasonable latitude because (and only
because) the subject brightness ratio put the exposure reasonably
inside the straight line portion of the density vs log exposure curve.
The film usually had gentle non-linear "toe and shoulder" that helped
in this.
I presume that digital imaging gives a straight line with abrupt toe
and shoulder, so that significant exposure error gives a far worse
visual result than it would with film. Is this correct?
John Gruffydd (Mold, Wales, UK)
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